- Birth Name: Helena Brigid
- Current Name: Fanahan
- Religious Name: Fanahan
- Last Name: Casey
- Mother's Name: Ellen (Carey) Casey
- Father's Name: Thomas Casey
- Hometown: Born in Croughevue, Co. Cork, Ireland in 1900
- Entry Date: September 22, 1920
- Current Status: Deceased
- Death Date: May 16, 2000
Biography:
Sister Fanahan was a nurse, administrator and/or supervisor at Presentation Sister hospitals.
St. Luke's, Aberdeen, S.D.
St. Joseph's, Mitchell, S.D.
McKennan, Sioux Falls, S.D.
Holy Rosary, Miles City, Mont.